Roller-skate



ROLLER SKATE.

Patented Oct. 20, 1885.

WITNESSES 220.9% Jla/w N. PEIEns Phowuthom lm, Washington. D. c.

- iharrnn rArEs HEATON OlVSLEY AND GEORGE WV. MARBLE, OF CHICAGO, ILLINOIS.

ROLLER- SKATE.

SPECIPZCATION forming part of Letters Patent No.328,510, dated October 20, 1885.

Application filed April 2, 1585.

T0 aZZ whom it may concern.-

Be it known that we, HnA'roNOwsLEY and GEORGE XV. IlIARBLE, of Chicago, in the county of Cook and State of Illinois, have in vented certain new and useful Improvements in Roller-Skates; and we do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

The object of our invention is to provide a new and improved roller-skate so constructed that the shortest possible curve may be made with them consistent with the preservation of the skaters equilibrium, which can regulate and give to both forward and rear rollers the same angle to the longitudinal line intersecting their pivotal centers when they make a curve, which do not get out of order easily, and which are provided with rollers so constructed that they afford a durable tread which will not break nor chip.

In the drawings, Figure 1 is a side elevation of our invention. Fig. 2 is a plan view of the same, taken from beneath. Figs. 3 and 4 are detail views showing modifications of certain parts of our invention; and Fig. 5 is a transverse vertical section of one of the rollers.

In the drawings, A represents the rollers journaled on studs projecting laterally from the pivotal head B. Projecting forward and upward at about an angle of forty-five degrees from this head B is a pivotal stud, I), which is journaled in the hanger or bracket 0, secured to and depending from the forward portion of the foot-plate D, supporting the ball of the foot. The bracket 0 is so constructed that it has two bearings, one adapted to journal the stud b contiguous to its base, and the other adapted to journal the upper end of said stud b so as to maintain it at about an angle of forty-five degrees. The engaging surfaces of the bearing in the bracket 0, which surrounds the stud 1) near its base and the head B, are fiat, and are intended to move easily on each other. The end of stud b may be swaged or provided with a nut to keep it in position. Extending from the pivotal head B to the rear, and preferably at right Serial No. 161,006. (No model.)

angles to the pivotal stud b, is an arm, E, which has a hole in its extremity for securing the end of a spring, 6, the purpose of which will hereinafter be more fully explained.

' The rear rollers are journaled on studs projecting from a head, B, similar in every essential feature to head B, to which the front rollers are connected, excepting that its position is reversed, so that the pivotal stud 1) extends to the rear and the arm E to the front in about the same relative positions as arm E and stud bof the bearing devices of the forward rollers.

The spring 6, hereinbefore referred to, is a coil-contraction spring, and connects the extremities of arms E and E of the forward and rear roller-bearing devices, respectively.

If desired, however, we do not deem it beyond the scope of ourinvention to use aspring, e, for each of the arms E and E, respectively; but in this event the arms would be shorter than shown in Fig. l, and one end of the springs would be connected to the extremity of the said arms, and the other to a stud or studs, or a loop extending from the foot-plate, substantially like that shown in Fig. 4.

As from continued use the spring 0 is apt to weaken, it is deemed desirable to have some means for regulating the tension of the said spring. This we accomplish by turning the ends of the arms E and E upward or down ward and securing one end of spring 6 permanently in the end of one arm, and screwthreading the other end of said spring, passing it through the end of the other arm, and providing it with a nut by which its tension may be regulated.

' The roller A is made of a thin web of metal connecting the hub and rim of the roller. The rim to has its outer edge provided with an annular flange, g, and is covered by a number of leather rings or washers h arranged edgewise and pressed together and outward against the flange 9 until they are as hard as wood. A ring, G, is then secured to the inner side of the rim in a suitable manner, so as to hold the leather rings hin place. When these rings h wear away or are injured they may be re placed with others by removing ring G.

WVhen in use our improved roller-skate operates substantially as follows, viz: As the skater rolls, in order to keep his balance, he

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centers they assume different angles to the 7 line of longitudinal motion, and the arms E and E, oscillating with pivotal devices of the forward and rear rollers, respectively, expands the spring 6 connecting their ends. The moment, however, the skate is lifted from the surface the contraction of spring e returns the rollers to their normal position.

We are aware that roller-skates have been conceived of having arms similar to E and E, only horizontal, with a spring connecting them. These skates, however, have the pivotal stud and therefore require an oscillating foot rest or plate and means for imparting the oscillatory motion thereof to the roller-axle.

We are also aware of Letters Patent for a skate 7 having arms similar to Eand E, but horizonstuds of the roller-axle inclined longitudinally; but the bearings for the pivotal studs are attached to a spring-plate, which, when the weight of a person is placed thereon, causes it to assume a horizontal position and bring the pivotal studs to a vertical position, thus inj uring the efficacy of the skate to oscillate the rollers to turn curves.

What we claim as new, and desire to secure by Letters Patent, is-

1. In a roller-skate, the combination, with the roller-head B, pivotal stud 6, extending at about forty-five degrees therefrom, and stiff foot-plate in bearings secured to which the pivotal studs are journaled, of the arm E and spring 0, substantially as set forth.

2. In a roller-skate, the combination, with the head B, pivotal studs projecting therefrom, and stiff foot-plate in bearings secured to which the pivotal studs are journaled, of the arm E, projecting from said head Bin adirection 0p 1 posite to the pivotal studs and spring 6. of the axle of the rollers ina vertical position,

, our own we affix our signatures in presence of 1 two witnesses.

In testimony that we claim the foregoing as HEATON OVVSLEY. GEORGE WM. MARBLE.

Witnesses:

JAMES H. COYNE, FRANK D. THOMASON. 

